US679676A - Brake for single-track railways. - Google Patents

Description

No. 679,676. 'Patented July so, wol. L. m. Hosen.

BRAKE FOB SINGLE TRACK RAILWAYS.

(Application hd Ich. 21', 1901.) (No Nudel.)

Izzz/en for.

TME NoRRls PTERS CO FNOTO-LITHD. WSHINGTON D l.

STATES PATENT Enron..

LEWIS M. HOSEA, OF CINCINNATI, OHIO, ASSIGNOR, BY MESNE ASSIGN- MENTS, TO CRAVLEY SCENIC AND PLEASURE RAILWAY COMPANY, OF

SAME PLACE.

BRAKE FOR SINGLE-TRACK RAILWAYS.

SPECIFICATION forming part of Letters Patent No. 679,676, dated July 30, 1901.

Application filed February Z1, 1901. Serial No. 48,223. (No model.)

Ton/ZZ whom it may concern:

Beit known that I, LEWIS M. HosEA, a citizen of the United States, residing at Cincinnati, in the county of Hamilton and State of Ohio, have invented new and useful Improvements in Brakes for Single-Track Railways, of which the following is a specification.

My invention has relation to single-track railways wherein guard-rails are employed 1o with suitable guard-wheels upon the car or its running-gear to maintain the equilibrium of the car and prevent derailment, its object being to provide a suitable brake adapted to,

control the speed and movement of the car I5 under all circumstances of use, thereby facilitating the proper use and enhancing the safety of such service.

To this end my invention consists in a trailing brake adapted when in use to bear downzo ward against the main bearing-rail with adj ustable force in frictional contact, and thus retard or stop the motion of the car without possibility of locking or skidding the bearing orguard wheels, and also is the means z5 of operating said brake whereby said operation is brought conveniently within reach of the operator for instant and effective use.

My invention is illustrated in the accompanying drawings, in which- 3o Figure lis aside elevation of the brake and its immediate connections, showing a hand-lever employed as the means of operation; Figs. 2 and 3, a plan view and a rear elevation, respectively, of the bearing-wheel of the truck or car, showing the construction and mode of attachment of the trailing brake and in Fig. 3 showing the relation of the guard-rails and wheels thereto; Fig. 4, a plan view showing the hand-lever and connection thence to 4o the bell-crank lever for operating the brakeshoe. Fig. 5 is a side elevation of the brake, showing a screw-shaft applied as the means of operating the same; and Fig. 6 a detail showing the attachment of the screw-shaft to the brake-shoe with provision for an interposed spring.

Referring now to the drawings in and of the subjoined description, it should be premised that the illustrations show the brake applied to aform of running-gear in which a bearing- 5o Wheel is attached to the car B through the medium of aswiveling truck A, but that the brake apparatus hereinafter described is not limited in its application to this structure,

but is equally applicable to those in which Y the bearing-wheel is made a direct and integral part of the car-body or to a two-wheel truck in which the wheels are arranged tandem.

The truck A shown in the present case is 6o annular and arranged to swivel in bearings a upon the frame of the car, like the fifthwheel of a wagon in order that the wheels may be adjusted to the radii of curvature of the track by means not necessary to illustrate here.

The brake itself is a shoe c, preferably of cast metal, attached to and between the termini of two trailing arms d d, hung upon the axle-bar a/ of the bearing-wheel W at either 7o side of said wheel. In the illustrations the shoe c is formed with a dorsal llange C, to and through which the arms d are bolted.

Two modes ot' operating the shoe upon the track are shown. In Figs. 1, 2, 3, and 4t the 75 arms d are extended by extensions y, the portions d y constituting a bell-crank lever pivoted upon the axle a', to the upper extremity of which bell-cranks are articulated two connecting-rods sr, extending and attached to a 8o hand-lever L, pivoted upon the swiveling truck A.

In the class of railways to which theinvention is applied the truck or car is provided with laterally-projecting studs upon which are pivoted wheels w, operating beneath guide-rails r, arranged at the sides of the central track-rail R. In the illustrations the guard-wheels w are carried at the outer termini of the axle d and the guide-rails fr' ar- 9o ranged correspondingly.

It will be seen that on operating the lever L, Fig. l, to the right or backward the bellcrank lever d d presses the brake-shoe C downward upon the track R. Under ordinary conditions the force applicable would be limited by the weight of the car; but in the present case the force applicable is not so limited, since any tendency to lift the car from the bearing-rail R is directly resisted by upward contact of the guard-wheels w with the guard-rails r.

In Fig. 5 in lieu of the leverL and the bellcrank extensions d and connections :12, above described, I substitute a screw-shaft f, operating through a screw-socket g, attached to the truck A and bearing against the shoe C. I may also employ a spring-buer s, interposed between the end of the screw-shaft f and the brake-shoe C. A practicable construction of this is shown in Fig. 6, in which a spring-casing s is employed, having at the bottom a tongue t, projecting downward between the arms d and pivotally connected therewith in an opening or central recess in the dorsal flange c, which is likewise bolted to the arms d. 'Phe pivotal connection of the spring-casing s with the shoe and a pivotal connection of the screw-socket g with the swiveling truck A permit the shaftf to accom modate itself to the slight change of position, due to the arc of movement of the brake-shoe C, held by its pivotal trailing arms d d.

I claim as my invention and desire to secure by Letters Patent ofthe United Statesl. In a single-rail railway system having guard Wheels bearing upwardly against guard-rails, a track-brake consisting essentially of a shoe attached to trailing arms pivoted to the truck or car body, adapted to trail behind the wheels and means connected with 67eme the car or truck operating to force the shoe into frictionalcontact With the bearing-track, substantially as set forth.

2. In combination with a wheel-truck, a bell-crank lever pivotally carried upon the wheel-axle or extensions thereof, so that one 4o arm of the lever trails behind the wheel; a shoe attached to the rear terminal of said 1ever, and a hand-lever pivoted upon the truck or car in connection with the opposite terminal of the bell-crank by the operation of which the shoe is forced into frictional contact with the main bearing-rail, substantially as set forth.

3. In a track-brake of the character indicated, the combination of a hand-lever piv- 5o oted to the swiveling-truck frame, two straps or connecting braces pivoted to the same at opposite sides, two bell-crank levers upon the wheel-shaft at opposite sides of the bearing- Wheel with upper arms projecting upwardly and connecting with the aforesaid straps; and lower arms projecting rearwardly beyond the Wheel, and a brake-shoe adapted to the contour of the track, carried by and between the rear terminals of the bell-crank lever, sub- 6o stantially as set forth.

In testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.

` LEWIS M. HOSEA. Witnesses:

WALTER A. KNIGHT, KATE E. BoDINE.

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